UMI Performance 1967-1972 GM A-Body 1" Lowering Spring Kit 1005 RPM Air-Gap 2-O

RPM Air-Gap 2-O

Features a 11

The system works with the existing design of the helmet and does not require any drilling of the shell or modifications to the EPS and can be fitted to all Stilo ST5 model helmets

QA1 70 / 82 Series Shocks

1978-1987 Buick Regal CID 400 RWD

UMI Performance 1967-1972 GM A-Body 1" Lowering Spring Kit 1005 RPM Air-Gap 2-OA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. Our front springs are wound from 5160 CrSi premium wire and feature a linear 530 lb in rate. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb in rate. The linear rate provides consistent handling